One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,7)(3,6,8,5)(9,10)(11,12)(13,14)(15,16)(17,18,21,24)(19,22,20,23)(26,30)(28,32)(1,3,4,8)(2,5,7,6)(9,11)(10,15)(12,13)(14,16)(17,19,21,20)(18,22,24,23)(26,30)(27,31)(9,12)(10,16)(11,13)(14,15)(17,19,21,20)(18,22,24,23)(25,26,29,30)(27,28,31,32)(1,2)(3,5)(4,7)(6,8)(9,12)(10,11)(13,16)(14,15)(17,18)(19,22)(20,23)(21,24)(25,27,29,31)(26,28,30,32)(1,3)(2,6)(4,8)(5,7)(9,13,14,10)(11,15,16,12)(17,20,21,19)(18,23,24,22)(25,28)(26,31)(27,30)(29,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.